.container {
  margin-top: 8vw;
}

.container .item {
  width: 80vw;
  height: 50vh;
  background-color: #cbf1d6;
  border: 1px gray solid;
  border-radius: 10px;
  position: relative;
}

.container .item #but {
  align-items: center;
  margin-top: 5vh;
  width: 9vw;
  height: 5vh;
  background-color: #a25b5b;
  border: 1px gray solid;
  border-radius: 5px;
  position: relative;
}
